FKIE_CVE-2021-21280

Vulnerability from fkie_nvd - Published: 2021-06-18 21:15 - Updated: 2024-11-21 05:47
Severity ?
8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Contiki-NG is an open-source, cross-platform operating system for internet of things devices. It is possible to cause an out-of-bounds write in versions of Contiki-NG prior to 4.6 when transmitting a 6LoWPAN packet with a chain of extension headers. Unfortunately, the written header is not checked to be within the available space, thereby making it possible to write outside the buffer. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround.
References
security-advisories@github.comhttps://github.com/contiki-ng/contiki-ng/pull/1409Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-r768-hrhf-v592Exploit, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/contiki-ng/contiki-ng/pull/1409Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-r768-hrhf-v592Exploit, Patch, Third Party Advisory
Impacted products
Vendor Product Version
contiki-ng contiki-ng *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5A252509-8FE0-4C3D-9628-2041425B3F05",
              "versionEndExcluding": "4.6",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Contiki-NG is an open-source, cross-platform operating system for internet of things devices. It is possible to cause an out-of-bounds write in versions of Contiki-NG prior to 4.6 when transmitting a 6LoWPAN packet with a chain of extension headers. Unfortunately, the written header is not checked to be within the available space, thereby making it possible to write outside the buffer. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround."
    },
    {
      "lang": "es",
      "value": "Contiki-NG es un sistema operativo de c\u00f3digo abierto y multiplataforma para dispositivos del Internet de las cosas. Es posible causar una escritura fuera de l\u00edmites en las versiones de Contiki-NG anteriores a 4.6, cuando se transmite un paquete 6LoWPAN con una cadena de encabezados de extensi\u00f3n. Desafortunadamente, el encabezado escrito no est\u00e1 comprobado que est\u00e9 dentro del espacio disponible, por lo que es posible escribir fuera del b\u00fafer. El problema ha sido parcheado en Contiki-NG versi\u00f3n 4.6. Los usuarios pueden aplicar el parche para esta vulnerabilidad fuera de l\u00edmite como soluci\u00f3n alternativa"
    }
  ],
  "id": "CVE-2021-21280",
  "lastModified": "2024-11-21T05:47:55.347",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
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        "exploitabilityScore": 10.0,
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        "obtainOtherPrivilege": false,
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        "source": "nvd@nist.gov",
        "type": "Primary",
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    "cvssMetricV31": [
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          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
          "version": "3.1"
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        "impactScore": 4.7,
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        "type": "Secondary"
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          "baseScore": 9.8,
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          "confidentialityImpact": "HIGH",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2021-06-18T21:15:07.750",
  "references": [
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      "url": "https://github.com/contiki-ng/contiki-ng/pull/1409"
    },
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      "tags": [
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "CWE-787"
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      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.